SE509059C2 - Method and equipment for making a building board, such as a floorboard - Google Patents
Method and equipment for making a building board, such as a floorboardInfo
- Publication number
- SE509059C2 SE509059C2 SE9604483A SE9604483A SE509059C2 SE 509059 C2 SE509059 C2 SE 509059C2 SE 9604483 A SE9604483 A SE 9604483A SE 9604483 A SE9604483 A SE 9604483A SE 509059 C2 SE509059 C2 SE 509059C2
- Authority
- SE
- Sweden
- Prior art keywords
- strip
- frame
- locking
- forming
- relative
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005304 joining Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 238000004080 punching Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 210000002105 tongue Anatomy 0.000 description 13
- 238000003801 milling Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 240000005561 Musa balbisiana Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2201/00—Joining sheets or plates or panels
- E04F2201/05—Separate connectors or inserts, e.g. pegs, pins, keys or strips
- E04F2201/0517—U- or C-shaped brackets and clamps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49616—Structural member making
- Y10T29/49623—Static structure, e.g., a building component
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Joining Of Building Structures In Genera (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Punching Or Piercing (AREA)
- Paper (AREA)
- Clamps And Clips (AREA)
- Finishing Walls (AREA)
- Connection Of Plates (AREA)
Abstract
Description
15 20 25 30 35 509 059 2 I syfte att illustrera de problem som ligger till grund för föreliggande uppfinning hänvisas nu till fig 1, som i sektion visar en fog mellan två identiska, mekaniskt sammanfogade golvskivor 2. Golvskivornas 2 ut- formning och funktion överensstämmer väsentligt med vad som är tidigare känt från WO 94/26999. Vissa skillnader gentemot känd teknik föreligger dock beträffande geome- triska former hos en griptapp och en làsdetalj. Dessa skillnader är dock inte primärt relevanta för denna be- skrivning. In order to illustrate the problems underlying the present invention, reference is now made to Fig. 1, which in section shows a joint between two identical, mechanically joined floorboards 2. The design and function of the floorboards 2 correspond substantially with what is previously known from WO 94/26999. However, there are some differences from the prior art with regard to geometric shapes of a gripping pin and a locking part. However, these differences are not primarily relevant to this description.
Varje skiva 2 har en ovansida 4 och en undersida 6 och kan i illustrerande syfte antas vara tillverkad av en stomme S av exempelvis laminerad träfiberskiva, plastkomposit, trä eller liknande. Stommens S tjocklek kan exempelvis vara 7 mm. För möjliggörande av en meka- nisk hopfogning är motstàende fogkanter 8 hos skivorna 2 utformade med en integrerad, fabriksmonterad plàtlist 10 respektive ett làsspàr 16. Listen 10 är företrädesvis tillverkad av aluminiumplàt och sträcker sig horison- tellt ut fràn skivans 2 undersida 6 i riktning mot den andra golvskivan samt löper kontinuerligt utmed fogens längd. Listen 10 kan dock vara uppdelad i mindre delar, som täcker huvudparten av fogens längd.Each board 2 has an upper side 4 and a lower side 6 and can for illustrative purposes be assumed to be made of a frame S of, for example, laminated wood fiber board, plastic composite, wood or the like. The thickness of the frame S can be, for example, 7 mm. To enable a mechanical joining, opposite joint edges 8 of the discs 2 are formed with an integrated, factory-fitted sheet metal strip 10 and a locking groove 16, respectively. The strip 10 is preferably made of aluminum sheet and extends horizontally from the underside 6 of the disc 2 towards the second floorboard and runs continuously along the length of the joint. The strip 10 can, however, be divided into smaller parts, which cover most of the length of the joint.
I det utförande som visas i illustrerande syfte i fig 1 är listen 10 mekaniskt fäst vid stommen S på det sätt som skall beskrivas närmare nedan. Mekanisk fast- sättning är föredraget, men inte absolut nödvändigt för implementeringen av föreliggande uppfinning. Listen 10 kan som alternativ limmas eller på annat sätt fästas vid stommen. Mekanisk fastsättning är dock föredraget av to- leransskäl. Andra metallplàtmaterial än aluminiumplàt är också tänkbara. För uppnående av såväl erforderliga fog- toleranser som enkel läggning är listen 10 integrerad med skivan, dvs den fabriksmonteras och skall speciellt inte monteras i samband med läggning. Som icke begrän- 10 15 20 25 30 35 509 059 3 sande exempel kan listens 10 bredd vara ca 30 mm, och dess tjocklek vara ca 0,6 mm.In the embodiment shown for illustrative purposes in Fig. 1, the strip 10 is mechanically attached to the frame S in the manner to be described in more detail below. Mechanical fastening is preferred, but not absolutely necessary for the implementation of the present invention. The strip 10 can alternatively be glued or otherwise attached to the frame. However, mechanical fastening is preferred for tolerance reasons. Sheet metal materials other than aluminum sheet are also conceivable. To achieve both the required joint tolerances and simple installation, the strip 10 is integrated with the board, ie it is factory-fitted and must not be specially fitted in connection with installation. As a non-limiting example, the width of the strip 10 may be about 30 mm, and its thickness may be about 0.6 mm.
Listen 10 är utformad med en ur plåtmaterialet bockad làsdetalj 12 som uppvisar en aktiv lásyta 14, vars höjd är exempelvis 1 mm. I sammanfogat tillstànd är làsdetaljen 12 upptagen i ett låsspår 16, som är utfor- mat den andra skivans undersida 6 och som löper paral- lellt med och pà avstånd från fogkanten 8. Làsdetaljen 12 och låsspàret 16 bildar tillsammans ovannämnda andra mekaniska förband, som låser skivorna 2 inbördes i den med D2 markerade riktningen. Närmare bestämt fungerar làsdetaljens 12 lásyta 14 som ett stoppanslag mot den yta 18 hos låsspàret 16 som ligger närmast fogkanterna 8.The strip 10 is formed with a locking detail 12 bent from the sheet material which has an active locking surface 14, the height of which is, for example, 1 mm. In the joined state, the locking member 12 is received in a locking groove 16, which is formed on the underside 6 of the second disc and which runs parallel to and at a distance from the joint edge 8. The locking member 12 and the locking groove 16 together form the above-mentioned other mechanical joints which lock the discs 2 relative to each other in the direction marked D2. More specifically, the locking surface 14 of the locking member 12 functions as a stop stop against the surface 18 of the locking groove 16 which is closest to the joint edges 8.
När skivorna 2 är hopfogade enligt fig 1 kan de inta ett inbördes läge i riktningen D2 där det mellan làsytan 10 och låsspàret 14 finns ett litet spelrum A så litet som 0,01 mm. Detta spelrum A gör det möjligt att utan verktyg förskjuta skivorna 2 i fogens riktning.When the discs 2 are joined according to Fig. 1, they can assume a mutual position in the direction D2 where there is a small clearance A as small as 0.01 mm between the locking surface 10 and the locking groove 14. This clearance A makes it possible to move the discs 2 in the direction of the joint without tools.
Denna förskjutbarhet ger en förenklad läggningen samt möjliggör hopfogning av kortsidorna genom insnäppning.This displaceability simplifies the layout and enables the short sides to be joined by snapping.
För en närmare beskrivning av funktionen och fördelarna med denna konstruktion hänvisas till WO 94/26999.For a more detailed description of the function and advantages of this construction, reference is made to WO 94/26999.
Listen 10 är monterad i ett toleransutjämnande ega- liseringsspàr i skivans 2 undersida 6. Egaliseringsspà- rets bredd är i detta utförande ungefär lika med halva listens 10 bredd, dvs kring 15 mm. Funktionen hos och olika sätt att utforma egaliseringsspàret beskrivs i de- talj i WO 94/26999 och behöver därför inte upprepas här.The strip 10 is mounted in a tolerance-equalizing leveling groove in the underside 6 of the disc 2. In this embodiment, the width of the leveling groove is approximately equal to half the width of the strip 10, ie around 15 mm. The function of and different ways of designing the leveling groove are described in detail in WO 94/26999 and therefore do not need to be repeated here.
För den mekaniska fastsättningen av listen 10 i stommen S är ett spàr 20 upptaget i skivans 2 undersida 6 på avstånd från en urtagning 22 vid fogkanten 8. Spå- ret 20 kan vara utformat antingen som ett kontinuerligt spår utmed hela skivans 2 längd, eller som ett antal se- parata spàr. Detta spår 20 avgränsar tillsammans med ur- tagningen 22 en laxstjärtformad griptapp 24. I sitt 10 15 20 25 30 35 509 059 4 fastsatta tillstånd i fig 1 uppvisar listen 10 ett antal utstansade och bockade tungor 26 samt en eller flera läppar 28, vilka är vikta kring motstående kanter hos griptappen 24.For the mechanical fastening of the strip 10 in the frame S, a groove 20 is received in the underside 6 of the disc 2 at a distance from a recess 22 at the joint edge 8. The groove 20 can be designed either as a continuous groove along the entire length of the disc 2, or as a number of separate tracks. This groove 20, together with the recess 22, delimits a salmontail-shaped gripping pin 24. In its fixed condition in Fig. 1, the strip 10 has a number of punched and bent tongues 26 and one or more lips 28, which are folded around opposite edges of the gripping pin 24.
Föreliggande uppfinning är baserad på (i) det i sig kända förhållandet att en bra fog av ovan beskrivna slag kräver att låsytan 14 har ett exakt, förutbestämt av- stånd från golvskivans 2 övre fogkant 8, och (ii) en in- sikt att det föreligger svàrbemästrade toleransproblem (adderade toleranser) vid tillverkning av skivan 2 och listen 10 samt vid fastsättningen av dessa två komponen- ter vid varandra.The present invention is based on (i) the fact known per se that a good joint of the type described above requires that the locking surface 14 has an exact, predetermined distance from the upper joint edge 8 of the floorboard 2, and (ii) an insight that it there are difficult-to-master tolerance problems (added tolerances) in the manufacture of the disc 2 and the strip 10 and in the fastening of these two components to each other.
Det för uppfinningen bakomliggande problemet skall nu förklaras närmare under hänvisning till fig 2 på bi- fogade ritningsblad, där på en färdig golvskiva 2 enligt fig 1 är markerat nedanstående positioner Pl-P3; avstånd S1-S3 samt toleranser tl och t2: P1-P3 avser relativa positioner i horisontalled.The problem underlying the invention will now be explained in more detail with reference to Fig. 2 on the attached drawing sheets, where on a finished floorboard 2 according to Fig. 1 the following positions P1-P3 are marked; distances S1-S3 and tolerances t1 and t2: P1-P3 refer to relative positions in the horizontal direction.
Pl: Golvskivans övre fogkant 8 P2: Referenspunkt på griptapp 24 P3: Listens 10 låsyta 14 S1* Önskat avstånd mellan Pl och P2 S1 Faktiskt avstånd mellan P1 och P2 pga tl ztl Toleransintervall för S1 vid fräsning av griptapp 24 S2* Önskat avstånd mellan P2 och P3 S2 Faktiskt avstånd mellan P2 och P3 pga t2 =t2 Toleransintervall avseende P2:s läge relativt P3 på grund av oexakt positionering vid fastsättning och tillverkning av förformad list. 10 15 20 25 30 35 509 059 5 S3* Önskat avstånd mellan Pl och P3 S3 Faktiskt avstånd mellan Pl och P3 Med ovanstående beteckningar gäller att: S1 = S1* 1 tl (1) S2 = S2* 1 t2 ç2) S3 = (S2* 1 t2) - (Sl* 1 tl) = (S2* - Sl*) 1 tl 1 t2 = S3* 1 tl 1 t2 (3) Utgående från dessa beteckningar finner man två extrem- fall 1 och 2: Extremfall nr 1: S1 max & S2 min I ett första extremfall är griptappen 24, på grund av oexakt fräsning och/eller förslitning av fräsverkty- get, maximalt förskjuten (+t1) i riktning från fogkanten 8 från sitt nominella läge. Avståndet S1 antar då sitt (P2 långt från Pl). Listen 10 med förformad låsdetalj 12 är tillverkad så och monterad så maximivärde S1* + tl att låsytan 14 intar en position P3 förskjuten maximalt (+t2) mot griptappen 24. Avståndet S2 antar då sitt mi- - t2 (P3 nära P2). I detta extremfall bi- drar båda toleranserna tl och t2 till att låsytan 14 (P3) (Pl).Pl: Upper joint edge of the floorboard 8 P2: Reference point on gripping pin 24 P3: Strip 10 locking surface 14 S1 * Desired distance between P1 and P2 S1 Actual distance between P1 and P2 due to tl ztl Tolerance interval for S1 when milling gripping pin 24 S2 * Desired distance between P2 and P3 S2 Actual distance between P2 and P3 due to t2 = t2 Tolerance interval regarding P2's position relative to P3 due to inaccurate positioning when attaching and manufacturing preformed strip. 10 15 20 25 30 35 509 059 5 S3 * Desired distance between P1 and P3 S3 Actual distance between P1 and P3 With the above designations it applies that: S1 = S1 * 1 tl (1) S2 = S2 * 1 t2 ç2) S3 = ( S2 * 1 t2) - (Sl * 1 tl) = (S2 * - Sl *) 1 tl 1 t2 = S3 * 1 tl 1 t2 (3) Based on these designations, one finds two extreme cases 1 and 2: Extreme case no. 1: S1 max & S2 min In a first extreme case, the gripping pin 24, due to inaccurate milling and / or wear of the milling tool, is maximally offset (+ t1) in the direction from the joint edge 8 from its nominal position. The distance S1 then assumes its (P2 far from P1). The strip 10 with preformed locking detail 12 is manufactured so and mounted so that the maximum value S1 * + t1 that the locking surface 14 assumes a position P3 offset maximum (+ t2) towards the gripping pin 24. The distance S2 then assumes its mi- - t2 (P3 near P2). In this extreme case, both tolerances t1 and t2 contribute to the locking surface 14 (P3) (P1).
Som resultat kan låsytan 14 komma att ligga så nära den nimivärde S2* förskjuts i riktning mot den övre fogkanten 8 övre fogkanten 8 rätt Sätt, kan skjutas i förhållande till varandra utan hjälp av att två skivor inte kan fogas samman på eller att de blir så förspända att de inte verktyg.As a result, the locking surface 14 may be so close to the nine value S2 * is displaced in the direction of the upper joint edge 8 the upper joint edge 8 correctly. The manner can be slid relative to each other without the aid of two discs not being joined together or becoming so biased that they are not tools.
Extremfall nr 2: S1 min och S2 max I detta andra extremfall är griptappen 24, på grund av oexakt fräsning och/eller förslitning av fräsverkty- get, (~t1) istället maximalt förskjuten i riktning mot 10 15 20 25 30 35 509 059 6 fogkanten 8 från sitt nominella läge. Avståndet S1 antar då sitt minimivärde S1* - tl (P2 nära P1). Listen 10 med förformad låsdetalj 12 är tillverkad så och monterad så att làsytan 14 intar en position P3 förskjuten maximalt (+t2) från griptappen 24. Avståndet S2 antar då sitt maximivärde S2* + t2 (P3 långt från P2). I detta andra extremfall bidrar båda toleranserna tl och t2 istället till att làsytan 14 (P3) förskjuts i riktning från den övre fogkanten 8 (P1). Som resultat kan làsytan 14 komma att ligga för långt från den övre fogkanten 8, så att glapp uppstår mellan två fogade skivor.Extreme case no. 2: S1 min and S2 max In this second extreme case, the gripping pin 24, due to inaccurate milling and / or wear of the milling tool, (~ t1) is instead maximally displaced in the direction of 10 15 20 25 30 35 509 059 6 the joint edge 8 from its nominal position. The distance S1 then assumes its minimum value S1 * - tl (P2 near P1). The strip 10 with preformed locking part 12 is manufactured so and mounted so that the locking surface 14 assumes a position P3 offset maximum (+ t2) from the gripping pin 24. The distance S2 then assumes its maximum value S2 * + t2 (P3 far from P2). In this second extreme case, both tolerances t1 and t2 instead contribute to the locking surface 14 (P3) being displaced in the direction from the upper joint edge 8 (P1). As a result, the locking surface 14 may be too far from the upper joint edge 8, so that a gap occurs between two joined boards.
Det problem som föreliggande uppfinning avser att lösa är i första hand det ovan illustrerade problemet (tl + t2). toleranser adderas med listens 10 tillverkningstoleran- med adderade toleranser När griptappens 24 ser och positioneringstoleranserna list-skiva blir den slutliga toleransen för hög och systemets kvalitet redu- ceras. Är avståndet mellan den övre fogkanten 8 och làs- ytan 14 för stort, erhålls en för stor springa hos den färdiga fogen. Är samma avstånd för litet kan skivorna inte fogas samman.The problem that the present invention seeks to solve is primarily the problem illustrated above (t1 + t2). tolerances are added with the manufacturing tolerance of the strip 10 with added tolerances When the gripping pin 24 looks and the positioning tolerances list-disc, the final tolerance becomes too high and the quality of the system is reduced. If the distance between the upper joint edge 8 and the locking surface 14 is too large, an excessive gap of the finished joint is obtained. If the same distance is too small, the discs cannot be joined together.
Såsom framgår av den efterföljande beskrivningen uppnås med föreliggande uppfinning även produktionsmäs- siga fördelar utöver elimineringen av ovannämnda problem med adderade toleranser.As will be apparent from the following description, the present invention also achieves production advantages in addition to eliminating the above-mentioned problems with added tolerances.
För lösning av ovannämnda problem anvisas enligt uppfinningen en metod enligt krav 1 respektive en ut- rustning enligt krav 15, varvid föredragna utföringsfor- mer är angivna i de osjälvständiga patentkraven.For solving the above-mentioned problems, a method according to claim 1 and an equipment according to claim 15, respectively, are provided according to the invention, wherein preferred embodiments are stated in the dependent claims.
Sålunda anvisas enligt uppfinningen en metod och en utrustning vid tillverkning av byggnadsskivor av det slag som innefattar en stomme försedd med en låsanord- ning i form av en från stommen utsträckt list med en formad låsyta för mekanisk fogning skivorna, varvid lis- ten och låsytan formas i ett stycke ur ett plàtämne. Ut- märkande för uppfinningen är att, i valfri ordning ut- 10 15 20 25 30 35 509 059 föra följande steg A och B: A. forma låsytan mot en formningsyta och sedan hålla den sà formade låsytan fixerad relativt formningsytan tills att bàda stegen A och B har utförts, B. fästa listen vid stommen, och att, under genomförande av det senare av stegen A och B, hålla stommen fixerad mot en referensyta, vars läge relativt formningsytan svarar mot ett önskat läge hos låsytan relativt stommen.Thus, according to the invention, there is provided a method and equipment for the manufacture of building boards of the type comprising a frame provided with a locking device in the form of a strip extending from the frame with a shaped locking surface for mechanical joining of the boards, the strip and locking surface being formed. in one piece from a sheet metal. Characteristic of the invention is to, in any order, perform the following steps A and B: A. forming the locking surface against a forming surface and then keeping the locking surface so formed fixed relative to the forming surface until both steps A and B has been performed, B. attaching the strip to the frame, and, while performing the latter of steps A and B, keeping the frame fixed to a reference surface, the position of which relative to the forming surface corresponds to a desired position of the locking surface relative to the frame.
Inom ramen för ovanstående definition av uppfin- ningen föreligger ett flertal utföranden, som alla åstadkommer den eftersträvade exaktheten hos avståndet mellan låsytan och stommen. Utmärkande för uppfinningen är i samtliga fall att listen aldrig både formas med sin làsyta och sätts fast vid stommen, innan låsytan och stommen har positionerats korrekt inbördes med hjälp av formningsytan och referensytan. Oberoende av i vilken ordningsföljd stegen A och B utförs elimineras ovan- nämnda problem med adderade toleranser.Within the scope of the above definition of the invention, there are a number of embodiments, all of which achieve the desired accuracy of the distance between the locking surface and the body. Characteristic of the invention is in all cases that the strip is never both formed with its locking surface and fastened to the frame, before the locking surface and the frame have been positioned correctly relative to each other by means of the forming surface and the reference surface. Regardless of the order in which steps A and B are performed, the above-mentioned problems with added tolerances are eliminated.
Enligt definitionen av uppfinningen hanteras lis- ten, när làsytan är formad, aldrig som en helt separat enhet under tillverkningsprocessen, och företrädesvis hanteras listen inte heller som en separat enhet innan låsytan formas. Användning av ett magasin med separata, förformade och/eller oformade lister innebär oönskade hanterings- och positioneringsproblem. Listen, med eller utan formad làsyta, bör alltid vara fixerad relativt àt- minstone en av formningsytan, stommen och plàtämnet.According to the definition of the invention, when the locking surface is formed, the strip is never handled as a completely separate unit during the manufacturing process, and preferably the strip is also not handled as a separate unit before the locking surface is formed. Using a magazine with separate, preformed and / or unshaped moldings involves unwanted handling and positioning problems. The strip, with or without shaped locking surface, should always be fixed relative to at least one of the forming surface, the frame and the sheet metal blank.
För implementering av uppfinningen fästs listen fö- reträdesvis mekaniskt vid stommen, men limning är även tänkbart. Företrädesvis fästs listen mekaniskt genom att 10 15 20 25 30 35 509 059 8 vissa delar av listen ombockas kring en i stommen utfor- mad griptapp, exempelvis som beskrivet i WO 94/26999.For implementation of the invention, the strip is preferably mechanically attached to the frame, but gluing is also conceivable. Preferably, the strip is mechanically fastened by bending certain parts of the strip around a gripping pin formed in the body, for example as described in WO 94/26999.
Enligt en föredragen utföringsform gäller att plåt- ämnet stegmatas framåt och därefter delas för frilägg- ning av listen från en efterföljande del av plàtämnet, som stegmatas framåt under en efterföljande cykel. Före- trädesvis delas plàtämnet först när listen har fixerats relativt formningsytan och/eller har fästs vid stommen.According to a preferred embodiment, the sheet metal blank is stepped forward and then divided to expose the strip from a subsequent part of the sheet blank, which is stepped forward during a subsequent cycle. Preferably, the sheet blank is divided only when the strip has been fixed relative to the forming surface and / or has been attached to the frame.
Formningsytan och referensytan utgör företrädesvis två ytor i ett och samma press- eller stansverktyg.The forming surface and the reference surface preferably form two surfaces in one and the same pressing or punching tool.
Enligt ett första alternativ fästs listen vid stom- men innan låsytan formas mot formningsytan. Härvid är det tänkbart att sätta fast listen på annan plats och därefter anbringa stommen med fastsatt list i ett form- ningsverktyg för formning av låsytan, under det att stommen hålls fixerad mot nämnda referensyta. Föredraget är dock att utföra fastsättning och formning i ett och samma verktyg utan mellanliggande hantering av list och stomme.According to a first alternative, the strip is attached to the frame before the locking surface is formed against the forming surface. In this case, it is conceivable to fasten the strip in another place and then apply the frame with attached strip in a forming tool for forming the locking surface, while the frame is kept fixed to said reference surface. However, it is preferred to perform fastening and shaping in one and the same tool without intermediate handling of the strip and frame.
Enligt ett annat alternativ formas låsytan mot formningsytan innan listen fästs vid stommen, varvid den formade làsytan hålls fixerad relativt formningsytan tills att fastsättningssteget har utförts.According to another alternative, the locking surface is formed against the forming surface before the strip is attached to the frame, the shaped locking surface being kept fixed relative to the forming surface until the fastening step has been performed.
Enligt en särskilt föredragen utföringsform formas låsytan mot formningsytan och fästs listen vid stommen under en enda fram- och àtergående stansoperation hos ett för dessa tvà steg gemensamt stansverktyg. Någon hantering av list och stomme krävs därvid inte mellan stegen A och B. Formning och fastsättning kan ske vä- sentligen samtidigt, men företrädesvis fästs listen vid stommen något litet före formningen av låsytan.According to a particularly preferred embodiment, the locking surface is formed against the forming surface and the strip is attached to the frame during a single reciprocating punching operation of a punching tool common to these two steps. No handling of the strip and frame is required between steps A and B. Forming and fastening can take place substantially simultaneously, but preferably the strip is attached to the frame somewhat slightly before the forming of the locking surface.
Stommen uppvisar ett kantparti som, vid mekanisk fogning av skivan med en andra skiva, ligger i omedelbar närhet av den andra skivan. Steget att fixera stommen mot referensytan består företrädesvis i att positionera och fixera detta kantparti mot nämnda referensyta, vars 10 15 20 25 30 35 509 059 9 läge relativt formningsytan svarar mot ett önskat läge hos låsytan relativt nämnda kantparti. Andra partier hos stommen är också tänkbara, men skulle eventuellt ge sämre slutresultat pga toleransproblem.The frame has an edge portion which, when mechanically joining the board with a second board, is in the immediate vicinity of the second board. The step of fixing the frame to the reference surface preferably consists in positioning and fixing this edge portion against said reference surface, the position of which relative to the forming surface corresponds to a desired position of the locking surface relative to said edge portion. Other parts of the body are also conceivable, but would possibly give poorer end results due to tolerance problems.
Sammanfattningsvis erbjuder uppfinningen bland an- nat följande fördelar: En byggnadsskiva av det aktuella slaget, exempelvis i form av en golvskiva, på exempelvis 1200 * 200 mm kan förses, pà såväl sin ena làngsida som sin ena kortsida, med en formad och fastsatt list a) i ett enda tillverkningsmoment, b) i en kontinuerlig pro- cess, c) med en mycket kort takttid på ca 2 sekunder, och d) med toleranser pà i 0,01 mm mellan làsyta och fogkant trots att tillverkningstoleranserna i praktiken är avsevärt större. Generellt är det önskvärt att vid tillverkningen kunna arbeta med så stora toleranser som möjligt, eftersom detta minskar ställtider, kontroller och verktygsslipning.In summary, the invention offers, inter alia, the following advantages: A building board of the type in question, for example in the form of a floorboard, of for example 1200 * 200 mm can be provided, on both its long side and one short side, with a shaped and fixed strip a ) in a single manufacturing step, b) in a continuous process, c) with a very short stroke time of about 2 seconds, and d) with tolerances of 0.01 mm between locking surface and joint edge despite the fact that manufacturing tolerances are in practice considerably greater . In general, it is desirable to be able to work with as large tolerances as possible during manufacture, as this reduces setting times, controls and tool grinding.
Ovanstående och andra utföringsformer och fördelar framgår av patentkraven och den efterföljande beskriv- ningen av ett föredraget utförande av uppfinningen.The above and other embodiments and advantages will be apparent from the claims and the following description of a preferred embodiment of the invention.
Kort beskrivning av ritningarna Fig 1 visar i sektion två mekaniskt hopfogade kant- partier hos två identiska golvskivor.Brief description of the drawings Fig. 1 shows in section two mechanically joined edge portions of two identical floorboards.
Fig 2 illustrerar vissa avstånd och toleranser hos det ena av kantpartierna i fig 1.Fig. 2 illustrates certain distances and tolerances of one of the edge portions of Fig. 1.
Fig 3 är en översiktsbild av en produktionslinje för framställning av golvskivor enligt uppfinningen.Fig. 3 is an overview view of a production line for the production of floorboards according to the invention.
Fig 4 visar den centrala delen hos en press ingå- ende i produktionslinjen i fig 3.Fig. 4 shows the central part of a press included in the production line in Fig. 3.
Fig 5A-5C visar tre på varandra följande arbetssteg i en arbetscykel hos pressen i fig 4.Figs. 5A-5C show three consecutive working steps in a working cycle of the press in Fig. 4.
Beskrivning av utföringsexempel Ett föredraget utförande av en produktionslinje för framställning av en golvskiva enligt fig 1 i enlighet med uppfinning skall nu beskrivas under hänvisning till 10 15 20 25 30 35 509 059 10 fig 3-5 på bifogade ritningsblad. För golvskivans kompo- nenter kommer samma hänvisningsbeteckningar att användas som i fig 1 och 2.Description of exemplary embodiments A preferred embodiment of a production line for producing a floorboard according to Fig. 1 in accordance with the invention will now be described with reference to Figs. 3-5 on the accompanying drawing sheets. For the components of the floorboard, the same reference numerals will be used as in Figs. 1 and 2.
I fig 3 är ett böjligt och formbart plàtämne 40, företrädesvis aluminiumplàt, upplindat på en haspel 42.In Fig. 3, a flexible and malleable sheet metal blank 40, preferably aluminum sheet, is wound on a reel 42.
Aluminiumplåten 40 matas ut från haspeln 42 till en plàtinmatare 46. Plàtinmataren 46 har till uppgift att stegvis inmata (pil Pl) det riktade plåtämnet 40 i en press 48. På sin motsatta sida mottar pressen 48 (pil P2) bearbetade (frästa) stommar S av exempelvis kompakt- laminat från en skivinmatare 50.The aluminum plate 40 is discharged from the reel 42 to a plate feeder 46. The task of the plate feeder 46 is to step feed (arrow P1) the directed sheet blank 40 into a press 48. On its opposite side, the press 48 (arrow P2) receives machined (milled) frames S of, for example, compact laminate from a disc feeder 50.
I produktionslinjen i fig 3 kapas plåtämnet 40 till separata plátlister 10, formas làsdetaljer 12 i listerna 10 och fästs listerna 10 mekaniskt vid skivstommar S.In the production line of Fig. 3, the sheet metal blank 40 is cut into separate sheet metal strips 10, locking details 12 are formed in the strips 10 and the strips 10 are mechanically attached to plate frames S.
Såsom nämnts ovan och som skall förklaras närmare nedan kan ordningsföljden hos dessa moment variera inom ramen för uppfinningen. De resulterande byggnadsskivorna upp- visar mycket goda toleransvärden avseende làsdetaljens 12 position relativt skivstommen S.As mentioned above and which will be explained in more detail below, the order of these steps may vary within the scope of the invention. The resulting building boards show very good tolerance values regarding the position of the locking part 12 relative to the board frame S.
Fig 4 visar schematiskt en central del av pressen 48. Ett övre pressbord 52 uppbär en stanshàllare 56, och ett nedre pressbord 54 uppbär en tillhörande pressdyna 58 samt ett till pressdynan 58 anslutande verktygsbord för stommen 60 som bildar en övre bäryta 62 (se fig 5) S. De tvâ pressborden 52 och 54 är inbördes rörliga i den med pil P3 visade Pig 5A-5C (vilka rellt med beteckningen Fig 5) visar de delar som är riktningen. tre figurer hänvisas till gene- centrala för (i) formningen av listens 10 làsdetalj 12 och (ii) fastsättningen av listen 10 vid stommen S.Fig. 4 schematically shows a central part of the press 48. An upper press table 52 supports a punch holder 56, and a lower press table 54 supports an associated press pad 58 and a tool table for the body 60 connecting to the press pad 58 which forms an upper support surface 62 (see Fig. 5). S. The two press tables 52 and 54 are mutually movable in the Pig 5A-5C shown by arrow P3 (which in the designation Fig. 5) shows the parts which are the direction. three figures refer to gene central for (i) the shaping of the locking member 12 of the strip 10 and (ii) the attachment of the strip 10 to the body S.
I fig 5 visas pressdynan 58 och verktygsbordet 60 i större skala. Eftersom dessa båda detaljer kan tillver- kas med mycket hög noggrannhet (försumbar tolerans) kan de ur funktionssynpunkt betraktas som en integrerad de- talj. 10 15 20 25 30 35 509 059 ll Pressdynan 58 har i sin ovansida dels en formnings- yta 64 mot vilken listens 10 làsdetalj 12 formas, dels en fasthàllningsyta 66. Formningsytan 64 är bildad av två delytor hos ett spår 68 vilket med stor exakthet är utformat i pressdynan 58 och sträcker sig vinkelrätt mot papperets plan utmed hela plâtämnets 40 bredd. Verktygs- bordet 60 har en tvärs införingsriktningen P2 utsträckt anslagskant 70, mot vilken ett förutbestämt parti av stommen S bringas till anliggning när stommen S matas in i pressen 48. I det föredragna utförandet utgörs nämnda förutbestämda parti av stommens S övre fogkant 8. An- slagskantens 70 uppgift är att fungera som referensyta och har för detta ändamål ett exakt, förutbestämt läge relativt formningsytan 12 som svarar mot ett önskat läge hos stommens S övre fogkant 8 relativt làsytan 14. Av- ståndet H i fig 5 är alltså lika med ett önskat värde S3* hos det i fig 2 markerade avståndet S3. Formnings- ytan 64 och referensytan 70 fungerar tillsammans som en ”mall” mot vilken làsytan 14 respektive den övre fogkan- ten 8 positioneras för uppnàende av goda toleransvärden hos den färdiga byggnadsskivan.Fig. 5 shows the press pad 58 and the tool table 60 on a larger scale. Since these two parts can be manufactured with very high accuracy (negligible tolerance), they can be regarded from an operational point of view as an integrated part. The press pad 58 has in its upper side partly a forming surface 64 against which the locking detail 12 of the strip 10 is formed, and partly a holding surface 66. The forming surface 64 is formed by two partial surfaces of a groove 68 which is with great accuracy formed in the press pad 58 and extends perpendicular to the plane of the paper along the entire width of the sheet blank 40. The tool table 60 has a stop edge 70 extending transversely to the insertion direction P2, against which a predetermined portion of the body S is brought into abutment when the body S is fed into the press 48. In the preferred embodiment, said predetermined portion of the upper joint edge 8 of the body S is formed. the task of the impact edge 70 is to function as a reference surface and for this purpose has an exact, predetermined position relative to the forming surface 12 which corresponds to a desired position of the upper joint edge 8 of the frame S relative to the locking surface 14. The distance H in Fig. 5 is thus equal to a desired value S3 * of the distance S3 marked in Fig. 2. The forming surface 64 and the reference surface 70 function together as a “template” against which the locking surface 14 and the upper joint edge 8, respectively, are positioned to achieve good tolerance values of the finished building board.
Ovanför pressdynan 58 och verktygsbordet 60 visas 72 och 73. tar dessa stansar unisont relativt pressdynan 58. Vidare tre stansar 71, I det visade utförandet arbe- visas tvà fràn stansarna 71-73 separata, vertikalt rör- liga tillhàllare 74 och 75. Stansarna 71-73 och tillhàl- larna 74 och 75 är utsträckta över hela plâtämnets 40 bredd. 72 är dock uppbyggd av ett flertal inbördes åt- skilda moduler.Above the press pad 58 and the tool table 60 are shown 72 and 73. these punches take in unison relative to the press pad 58. Further three punches 71, In the embodiment shown, two from the punches 71-73 are operated separate, vertically movable tumblers 74 and 75. The punches 71 -73 and receptacles 74 and 75 extend over the entire width of the sheet metal 40. 72, however, is made up of a number of mutually separate modules.
Den första stansen 71 formar låsdetaljens 12 låsyta 14 mot formningsytan 64. Den andra stansen 72 och den tredje stansen 73 tjänar till att bocka tungorna 26 re- spektive läppen 28 runt stommens S griptapp 24 för att mekaniskt fästa listen 10 vid stommen S. Den andra stan- sen 72 är som nämnt ovan uppbyggd av moduler, varvid varje modul tjänar till att ombocka en motsvarande tunga 10 15 20 25 30 35 509 059 12 26 och kan vara exempelvis 10 mm bred. För att stansen 71 skall kunna utföra ombockningen av läppen 28 är den senare förformad i plàtämnet 40 uppströms produktions- linjen, och för att stansen 72 skall kunna utföra om- bockningen av tungorna 26 är de senare förformade i plàtämnet 40 uppströms i produktionslinjen, så att det föreligger öppningar 76 i plàtämnet 40 för mottagning av den andra stansen 72.The first punch 71 forms the locking surface 14 of the locking member 12 against the forming surface 64. The second punch 72 and the third punch 73 serve to bend the tongues 26 and the lip 28, respectively, around the gripping pin 24 of the body S to mechanically attach the strip 10 to the body S. as mentioned above, the punch 72 is made up of modules, each module serving to bend a corresponding tongue 10 15 20 25 30 35 509 059 12 26 and can be, for example, 10 mm wide. In order for the punch 71 to perform the bending of the lip 28, the latter is preformed in the sheet blank 40 upstream of the production line, and in order for the punch 72 to perform the folding of the tongues 26, the latter are preformed in the sheet blank 40 upstream of the production line. there are openings 76 in the sheet blank 40 for receiving the second punch 72.
En arbetscykel hos den ovan beskrivna pressen skall nu beskrivas närmare i detalj. Först stegmatas (Pl) den del av plàtämnet 40 som skall bilda listen 10 in över pressdynan 58. Under denna inmatning förformas läppen 28 och tungorna 26 och är listen 10 fortfarande sammanhäng- ande med resten av plàtämnet 40. En viss partiell fri- läggning kan dock ha skett tidigare, men i vart fall gäller att listen 10 i detta inmatningssteg inte hante- ras som en separat enhet. Väsentligen samtidigt inmatas (P2) en stomme 10 över verktygsbordet 60 och positione- ras med sin övre fogkant 8 till anliggning mot referens- ytan 70.A work cycle of the press described above will now be described in more detail. First, the part of the sheet blank 40 which is to form the strip 10 is to be fed in over the press pad 58. During this feed, the lip 28 and the tongues 26 are preformed and the strip 10 is still continuous with the rest of the sheet blank 40. A certain partial release may however, this has happened before, but in any case the strip 10 in this input step is not handled as a separate unit. Substantially at the same time, a frame 10 is fed (P2) over the tool table 60 and positioned with its upper joint edge 8 to abut against the reference surface 70.
Därefter aktiveras tillhållarna 74 och 75 till det i fig 5B visade fasthàllningsläget. Tillhållaren 74 fix- erar listen 10 relativt pressdynan 58. Tillhållaren 75 fixerar listen 10 relativt stommens S undersida 6 och fixerar stommen S relativt verktygsbordet 60 och därmed också relativt referensytan 70. Tillhállarna 74 och 75 kvarhàlls i detta fasthàllningsläge tills att làsdetal- jen 12 har formats och listen 10 har fästs vid stommen S.Thereafter, the tumblers 74 and 75 are activated to the holding position shown in Fig. 5B. The tumbler 74 fixes the strip 10 relative to the press pad 58. The tumbler 75 fixes the strip 10 relative to the underside 6 of the body S and fixes the body S relative to the tool table 60 and thus also relative to the reference surface 70. The tumblers 74 and 75 are retained in this holding position until the locking member 12 has formed and the strip 10 has been attached to the frame S.
Som nästa steg aktiveras stansarna 71-73 unisont enligt fig 5B och 5C, så att (i) låsdetaljens 12 làsyta 14 formas mot formningsytan 64, (ii) listen 10 friläggs från plàtämnet 40 genom att den klipps av med exempelvis en stans, och (iii) listen 10 fästs vid stommen S. Dessa tre moment sker således väsentligen samtidigt. För sä- kerställande att stansen 71 "går i botten” mot spåret 10 15 20 25 30 35 509 059 13 68, går stansarna 72 och 73 något före stansen 71. Där- efter att de har fullbordat sin ombockning av tungorna 24 respektive läppen 28, med kan stansarna 72 och 73, fortsätta ett extra stycke under den avslutande form- ningen av låsdetaljen 12 medelst stansen 71. Alla stans- ningsmoment är klara när (kapning, formning, bockning) stansen 71 når sitt bottenläge mot formningsytan 64.As the next step, the punches 71-73 are activated in unison according to Figs. 5B and 5C, so that (i) the locking surface 14 of the locking member 12 is formed against the forming surface 64, (ii) the strip 10 is exposed from the plate blank 40 by cutting with, for example, a punch, and ( iii) the strip 10 is attached to the frame S. These three steps thus take place substantially simultaneously. To ensure that the punch 71 "goes to the bottom" towards the groove 10 15 20 25 30 35 509 059 13 68, the punches 72 and 73 go slightly before the punch 71. After they have completed their bending of the tongues 24 and the lip 28, respectively. , with the punches 72 and 73, can continue an extra piece during the final shaping of the locking part 12 by means of the punch 71. All punching steps are completed when (cutting, shaping, bending) the punch 71 reaches its bottom position against the forming surface 64.
Pressdynan 58 och verktygsbordet 60 kan med idag tillgänglig teknik framställas med mycket hög exakthet (tolerans i storleksordningen 0,001 mm). Avståndet H, som representerar det relativa läget mellan formnings- ytan 64 och referensytan 70 och som är lika med börvär- det S3* för det kritiska avståndet S3 mellan golvskivans övre fogkant 8 och làsdetaljens 12 làsyta 14, kan därför betraktas som exakt utan toleranser.With the technology available today, the press pad 58 and the tool table 60 can be manufactured with very high accuracy (tolerance in the order of 0.001 mm). The distance H, which represents the relative position between the forming surface 64 and the reference surface 70 and which is equal to the setpoint S3 * for the critical distance S3 between the upper joint edge 8 of the floorboard and the locking surface 14 of the locking member 12, can therefore be considered exactly without tolerances.
Vid formningen av låsdetaljen 12 uppkommer med da- gens stansteknik en tolerans t3 på i storleksordningen 0,01 mm. Denna tolerans t3 är betydligt bättre än tole- ransen vid bearbetning av stommen S (0,02-0,03 mm). Där- till kommer att bearbetningsverktyg slits mer än stansverktyg, varför màttnoggrannheten vid bearbetningen av stommen S i praktiken kan uppgà till i 0,05 mm. In- verkan av sistnämnda tolerans elimineras med uppfin- ningen.When forming the locking part 12, a tolerance t3 of the order of 0.01 mm arises with the punching technique of the day. This tolerance t3 is significantly better than the tolerance when machining the frame S (0.02-0.03 mm). In addition, machining tools wear more than punching tools, which is why the dimensional accuracy in machining the frame S can in practice amount to 0.05 mm. The effect of the latter tolerance is eliminated with the invention.
När lásytan 14 formas mot formningsytan 64 uppstår, avseende den relativa positionen mellan làsytan 14 och formningsytan 64, ovannämnda tolerans t3. t3 Làsyta 14 +-----+ Formningsyta 64 (1) Vidare gäller enligt ovan att formningsytan 64 och refe- rensytan 70 har ett exakt inbördes läge: Exakt Formningsyta 64 +-----+ Referensyta 70 (2) 10 15 20 25 30 35 509 059 14 (1)+(2) ger att den formade làsytans 14 position rela- -tivt referensytan 70 också är bestämd med toleransen t3: t3 Låsyta 14 +-----* Referensyta 70 (3) Eftersom tillhållaren 74 hàller listen 10 fixerad rela- tivt pressdynan 58 och därmed referensytan 70 under hela stansoperationen hos stansarna 71-73, är sambandet (3) uppfyllt så länge tillhållaren 74 är aktiverad. Den re- lativa positionen mellan låsytan 14 och referensytan 70 är därmed bestämd med stor noggrannhet (tolerans t3).When the locking surface 14 is formed against the forming surface 64, with respect to the relative position between the locking surface 14 and the forming surface 64, the above-mentioned tolerance t3 arises. t3 Locking surface 14 + ----- + Forming surface 64 (1) Furthermore, as above, the forming surface 64 and the reference surface 70 have an exact mutual position: Exact Forming surface 64 + ----- + Reference surface 70 (2) 10 15 20 25 30 35 509 059 14 (1) + (2) means that the position of the shaped locking surface 14 relative to the reference surface 70 is also determined by the tolerance t3: t3 Locking surface 14 + ----- * Reference surface 70 (3) Since the tumbler 74 keeps the strip 10 fixed relative to the press pad 58 and thus the reference surface 70 during the entire punching operation of the punches 71-73, the connection (3) is fulfilled as long as the tumbler 74 is activated. The relative position between the locking surface 14 and the reference surface 70 is thus determined with great accuracy (tolerance t3).
Stommens S övre fogkant 8 kan positioneras exakt rela- tivt referensytan 70 väsentligen utan någon tolerans, dvs: exakt Referensyta 70 +-----* Övre fogkant 8 (4) Denna exakta position hos den övre fogkanten 8 relativt referensytan 70 fixeras med hjälp av den andra tillhål- laren 75, som också fixerar listen 10 relativt stommen S. Sambandet operationen hos stansarna 71-73. (4) är således uppfyllt under hela stans- (3)+(4) ger att den formade làsytans 14 position relativt den övre fogkanten 8 i detta läge är bestämd med tolerans t3: t3 Låsyta 14 è-ï-v Övre fogkant 8 (5) Eftersom listen 10 hela tiden hålls fixerad relativt stommen 10 medelst tillhållaren 75 påverkas ovanstående förhållande (5) vid stommen S. Det eftersträvade förhållandet (5) inte av listens mekaniska fastsättning kan 10 15 20 25 30 35 509 059 15 uppnås oberoende om listen 10 sätts fast vid stommen S något före eller något efter formningen av låsdetaljen 12.The upper joint edge 8 of the frame S can be positioned exactly relative to the reference surface 70 substantially without any tolerance, ie: exact Reference surface 70 + ----- * Upper joint edge 8 (4) This exact position of the upper joint edge 8 relative to the reference surface 70 is fixed by means of of the second tumbler 75, which also fixes the strip 10 relative to the body S. The connection operation of the punches 71-73. (4) is thus fulfilled during the entire punching- (3) + (4) gives that the position of the shaped locking surface 14 relative to the upper joint edge 8 in this position is determined with tolerance t3: t3 Locking surface 14 è-ï-v Upper joint edge 8 ( 5) Since the strip 10 is kept fixed relative to the frame 10 at all times by means of the tumbler 75, the above condition (5) is affected at the frame S. The desired ratio (5) cannot be achieved by the mechanical attachment of the strip 10 15 20 25 30 35 509 059 15 regardless of the strip 10 is attached to the frame S slightly before or slightly after the formation of the locking member 12.
Sammanfattningsvis elimineras problemet med adde- rade toleranser, eftersom toleranserna avseende bearbet- ningen av stommen S inte påverkar slutresultatet. Det kritiska avståndet S3 kan bestämmas med en noggrannhet t3 enligt S3 = S3* : t3 (= H : t3).In summary, the problem of added tolerances is eliminated, since the tolerances regarding the machining of the frame S do not affect the end result. The critical distance S3 can be determined with an accuracy t3 according to S3 = S3 *: t3 (= H: t3).
Utöver eliminering av problemet med adderade tole- ranser löses i ovanstående utföringsexempel även ett an- nat problem: Listen 10 friläggs från plåtämnet 40 först efter att tillhållarna 74 och 75 har aktiverats. Tack vare att plåtämnet 40 och därmed den blivande listen 10 kan frammatas medelst plåtinmataren 46 med exakta mat- ningssteg, kan den ännu icke frilagda listen 10 positio- neras med hög noggrannhet relativt såväl griptappen 24 som stansarna 72 och 73.In addition to eliminating the problem of added tolerances, the above embodiment also solves another problem: The strip 10 is exposed from the sheet blank 40 only after the tumblers 74 and 75 have been activated. Thanks to the fact that the sheet metal blank 40 and thus the future strip 10 can be advanced by means of the sheet metal feeder 46 with precise feeding steps, the not yet exposed strip 10 can be positioned with high accuracy relative to both the gripping pin 24 and the punches 72 and 73.
I det ovan beskrivna utförandet utförs en förbock- ning av tungorna 26 och av läppen 28. Denna förbockning är föredragen, men är i sig inte nödvändig för implemen- tering av uppfinningen och skulle i en enklare variant kunna uteslutas i ovanstående utföringsexempel.In the embodiment described above, a pre-bending of the tongues 26 and of the lip 28. This pre-bending is preferred, but is not in itself necessary for implementing the invention and could in a simpler variant be omitted in the above exemplary embodiment.
Innan listen positioneras och fixeras medelst till- hållarna 74 och 75, förbockas såväl tungorna 26 som läp- pen 28 till det i fig 5A visade läget. Förbockningen av såväl tungorna 26 som läppen 28 åstadkoms i föregående (ej visade) tillverkningssteg. Förbockningen är gjord utmed en linje som ligger på avstånd från griptappen 24.Before the strip is positioned and fixed by means of the tumblers 74 and 75, both the tongues 26 and the lip 28 are pre-bent to the position shown in Fig. 5A. The pre-bending of both the tongues 26 and the lip 28 is accomplished in the previous manufacturing steps (not shown). The pre-bend is made along a line which is at a distance from the gripping pin 24.
När stansarna 72 och 73 aktiveras (Fig 5B och 5C), kom- mer en andra bockning att ske kring griptappen 24. Det förbockade partiet kommer därvid att undergå en viss återbockning, med resultat att det uppkommer en förspän- ning i såväl tungorna 26 som läppen 28. Denna förspän- ning ger bland annat följande viktiga fördelar: ° Stommen S, som typiskt är tillverkad av trä eller ett kan ändra träbaserat material, alternativt av plast, 509 059 16 dimensioner vid fukt- och temperaturvariationer, medan listen bara är temperaturkänslig. Förspänningen säker- ställer att det mekaniska förbandet inte påverkas ne- gativt av dimensionsförändringar hos stommen och/eller listen.When the punches 72 and 73 are activated (Figs. 5B and 5C), a second bending will take place around the gripping pin 24. The pre-bent portion will then undergo a certain re-bending, with the result that a prestress arises in both the tongues 26 and lip 28. This prestress provides, among other things, the following important advantages: ° The frame S, which is typically made of wood or one can change wood-based material, alternatively of plastic, 509 059 16 dimensions for moisture and temperature variations, while the strip is only temperature sensitive . The prestress ensures that the mechanical joint is not negatively affected by dimensional changes in the frame and / or strip.
° Eftersom formning av låsdetaljen 12 utförs med en ver- tikalt arbetande stans och fastsättningen skall ske med samma stansverktyg, är det en fördel om fastsätt- ningen kan ske med vertikalt arbetande stansar. För- bockningstekniken gör detta möjligt.° Since shaping of the locking part 12 is carried out with a vertically working punch and the fastening must be done with the same punching tool, it is an advantage if the fastening can be done with vertically working punching. The pre-bending technique makes this possible.
° Förbockningen innebär att stommens och därmed den fär- diga golvskivans tjocklek kan reduceras, eftersom dju- pet hos urtagningarna 20 och 22 i stommens S undersida 6 kan reduceras.° The pre-bending means that the thickness of the frame and thus the finished floorboard can be reduced, since the depth of the recesses 20 and 22 in the underside 6 of the frame S can be reduced.
° Felaktig position hos griptappen 24 kompenseras genom att tungorna och läppen kan återbockas i olika grad.° Incorrect position of the gripping pin 24 is compensated by the fact that the tongues and the lip can be bent back to varying degrees.
Eftersom läppen 28 är kontinuerligt utsträckt utmed hela listens 10 längd, medan tungorna 26 ligger pà in- bördes avstånd i listens 10 längdriktning, sà kommer trycket på läppen 28 från stansen 73 att vara högre än trycket på tungorna 26 från stansen 72. Den av stansen 73 genererade, horisontella kraften F3 (fig 5C) kommer därmed att vara större än den motriktade kraften F2 från stansen 72. Effekten av denna kraftdifferens (F3-P2) är att en eventuell ”bananform” hos stommen S, som skulle kunna ge upphov till oönskat mellanrum i fogen mellan tvà sammankopplade skivor, rättas ut.Since the lip 28 is continuously extended along the entire length of the strip 10, while the tongues 26 are spaced apart in the longitudinal direction of the strip 10, the pressure on the lip 28 from the punch 73 will be higher than the pressure on the tongues 26 from the punch 72. 73 generated horizontal force F3 (Fig. 5C) will thus be greater than the opposite force F2 from the punch 72. The effect of this force difference (F3-P2) is that a possible "banana shape" of the body S, which could give rise to unwanted gap in the joint between two interconnected discs, straightened.
Claims (15)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9604483A SE509059C2 (en) | 1996-12-05 | 1996-12-05 | Method and equipment for making a building board, such as a floorboard |
| AU54224/98A AU5422498A (en) | 1996-12-05 | 1997-12-05 | Method and equipment for making a building board |
| AT97948084T ATE253161T1 (en) | 1996-12-05 | 1997-12-05 | METHOD AND DEVICE FOR PRODUCING A CONSTRUCTION PLATE |
| ES97948084T ES2208960T3 (en) | 1996-12-05 | 1997-12-05 | METHOD AND EQUIPMENT TO MANUFACTURE A CONSTRUCTION BOARD. |
| PT97948084T PT958442E (en) | 1996-12-05 | 1997-12-05 | METHOD AND EQUIPMENT FOR MANUFACTURING A BUILDING PLATE |
| EP97948084A EP0958442B1 (en) | 1996-12-05 | 1997-12-05 | Method and equipment for making a building board |
| DK97948084T DK0958442T3 (en) | 1996-12-05 | 1997-12-05 | Method and equipment for making a building board |
| DE69725892T DE69725892T2 (en) | 1996-12-05 | 1997-12-05 | METHOD AND DEVICE FOR PRODUCING A BUILDING BOARD |
| PCT/SE1997/002034 WO1998024995A1 (en) | 1996-12-05 | 1997-12-05 | Method and equipment for making a building board |
| US09/323,953 US6094882A (en) | 1996-12-05 | 1999-06-02 | Method and equipment for making a building board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9604483A SE509059C2 (en) | 1996-12-05 | 1996-12-05 | Method and equipment for making a building board, such as a floorboard |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9604483D0 SE9604483D0 (en) | 1996-12-05 |
| SE9604483L SE9604483L (en) | 1998-06-06 |
| SE509059C2 true SE509059C2 (en) | 1998-11-30 |
Family
ID=20404872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9604483A SE509059C2 (en) | 1996-12-05 | 1996-12-05 | Method and equipment for making a building board, such as a floorboard |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6094882A (en) |
| EP (1) | EP0958442B1 (en) |
| AT (1) | ATE253161T1 (en) |
| AU (1) | AU5422498A (en) |
| DE (1) | DE69725892T2 (en) |
| DK (1) | DK0958442T3 (en) |
| ES (1) | ES2208960T3 (en) |
| PT (1) | PT958442E (en) |
| SE (1) | SE509059C2 (en) |
| WO (1) | WO1998024995A1 (en) |
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-
1996
- 1996-12-05 SE SE9604483A patent/SE509059C2/en not_active IP Right Cessation
-
1997
- 1997-12-05 PT PT97948084T patent/PT958442E/en unknown
- 1997-12-05 AT AT97948084T patent/ATE253161T1/en not_active IP Right Cessation
- 1997-12-05 DK DK97948084T patent/DK0958442T3/en active
- 1997-12-05 WO PCT/SE1997/002034 patent/WO1998024995A1/en active IP Right Grant
- 1997-12-05 AU AU54224/98A patent/AU5422498A/en not_active Abandoned
- 1997-12-05 ES ES97948084T patent/ES2208960T3/en not_active Expired - Lifetime
- 1997-12-05 DE DE69725892T patent/DE69725892T2/en not_active Expired - Lifetime
- 1997-12-05 EP EP97948084A patent/EP0958442B1/en not_active Expired - Lifetime
-
1999
- 1999-06-02 US US09/323,953 patent/US6094882A/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| SE9604483L (en) | 1998-06-06 |
| AU5422498A (en) | 1998-06-29 |
| DK0958442T3 (en) | 2004-02-02 |
| EP0958442B1 (en) | 2003-10-29 |
| PT958442E (en) | 2004-03-31 |
| ES2208960T3 (en) | 2004-06-16 |
| WO1998024995A1 (en) | 1998-06-11 |
| US6094882A (en) | 2000-08-01 |
| DE69725892D1 (en) | 2003-12-04 |
| DE69725892T2 (en) | 2004-05-13 |
| EP0958442A1 (en) | 1999-11-24 |
| SE9604483D0 (en) | 1996-12-05 |
| ATE253161T1 (en) | 2003-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |